All you have to do is copy and paste that link, then select "Upload Image"
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If it asks you to record audio, just deny it. It doesnt need to do that.
Anyway, once you click upload sketch, you can either upload a file or take a picture
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It will lead you to this page! Scroll down and you see it has default colors set!
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YYou can also control what colors go into it by sketching it with the paint brush
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Pretty awesome! Anyway it's great if you arent sure what color you want your character to be yet, plus it gives you room to test out colors for characters and such!